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← ScienceWhich outcome results when extremely high mass occurs in stellar nucleosynthesis?
A)Iron's average binding energy peaking✓
B)Carbon fusion reaction ignition
C)Increased helium flash frequency
D)Protostar hydrogen fusion stabilization
💡 Explanation
Iron production stops stellar nucleosynthesis because increasing atomic mass past iron decreases the average binding energy per nucleon. Therefore, fusion becomes endothermic rather than exothermic past iron, hence energy absorption, rather than the release causes collapse.
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